If you think that the lift support on your vehicle is starting to fail – then it's time for a quick and easy do-it-yourself repair. Lift support failure can be identified when the hood, hatch, trunk or window doesn't hold open the way that it used to. TRW X-Tend branded gas-charge lift supports are the OE quality replacement part for hoods, hatches, trunks and window glass. No special tools are needed for this easy install product. Keep in mind – for optimal performance, it's advised to replace lifts supports in pairs for best results and to renew the lifting power.